Answer:
Step-by-step explanation:
From the information given;
mass of the crate m = 41 kg
constant horizontal force = 135 N
where;

coefficient of kinetic friction
= 0.28
a)
To start with the work done by the applied force



Work done by friction:

Work done by gravity:

Work done by normal force;


b)
total work by all forces:

W = 2100.5 J
c) By applying the work-energy theorem;
total work done = ΔK.E



